Sum and Difference Identities

6. Trigonometric Identities and More Equations / Sum and Difference Identities / Problema 3

Problema 3

Using a sum or difference formula, determine the exact value of the given trigonometric expression.
tan(7π/12)

-√3 - 2

-√3 + 2

-√2 - 3

-√2 + 3